Hexapopha tallitae, Feitosa & Ott & Bonaldo, 2023

Feitosa, Níthomas M., Ott, Ricardo & Bonaldo, Alexandre B., 2023, Meeting the southern brothers: a revision of the Neotropical spider genus Hexapopha Platnick, Berniker & Víquez, 2014 (Araneae, Oonopidae), Zootaxa 5329 (1), pp. 1-150 : 44

Hexapopha tallitae sp. nov.

Figs 26–28 ; Map 2

Type material: Holotype: male from Comunidade Pacoval , Portel, Pará, Brazil (01°50’16.20”S, 50°36’55.80”W), Jun. 03–05, 2016, N.M. Feitosa et al., leg., deposited in MPEG 37096, PBI_OON 46099 . Paratypes: same locality and collector as holotype, 1♀ (MPEG 37099, PBI _ OON 44880 ); (01°50’54.45”S, 50°36’33.91”W) , Jun. 02–07, 2016, 1♁ (MPEG 37097, PBI _ OON 46100 ) ; Comunidade Santa Rosa (01°51’44.60”S, 50°39’57.70”W), May 29– Jun. 03, 2016, R. Saturnino et al., leg., 1♀ (MPEG 37098, PBI _ OON 44906 ) ;

Etymology. The specific name is a patronym honoring the first author’s wife, Tallita Santos Barbon Feitosa.

Diagnosis. Males of this species resemble those of H. platnicki sp. nov. by the posteriorly directed endite’s P1, reaching the anterior margin of sternum, and by the convergent endite’s P1 with conspicuous prolateral process ( Figs 28C , 31B ). They differ by the prolateral process crestlike, serrated ( Figs 28C–E ) (tear-shaped, not serrated in H. platnicki sp. nov., Fig . 31B). Females resemble those of H. excavata sp. nov. and H. platnicki sp. nov. by the lack of an postepigastric scape and by the postepigastric plate long, tongue-shaped ( Figs 31J , 66J ). They differ by the postepigastric plate not excavated, with strongly sclerotized margins ( Figs 27F–H , 28J ) (excavated in H. excavata sp. nov., Fig. 66J ; unsclerotized in H. platnicki sp. nov., Fig. 30G ).

Description. Male (PBI_OON 46099). Total length 1.58. CEPHALOTHORAX: Carapace orange-brown, without any pattern, pars cephalica with two posterior humps in lateral view, surface of elevated portion of pars cephalica smooth, sides finely reticulate, fovea present ( Figs 26B–C ). Eyes all oval; posterior eye row straight from above, procurved from front; ALE separated by their radius to diameter, ALE-PLE separated by less than ALE radius, PME touching throughout most of their length, PLE-PME separated by less than PME radius ( Fig. 26E ). Sternum as long as wide, orange-brown, median concavity absent, with radial furrows between coxae I–II, II–III, III–IV, furrow with rows of small pits, surface finely reticulate, without pits, microsculpture absent; prossoma pedicelar region with process ( Figs 26B–C , 28B ). Mouthparts: Chelicerae distal region unmodified ( Fig. 26E ). Labium anterior margin anteriorly projecting at middle, wider than long ( Fig. 28C ). Endites with a median projection (mp), a prolateral process of P1, a P1 and P2; mp short, directed anteriorly; P1 relatively long, directed posteriorly, situated posteriorly to mp, laterally to prolateral process of P1; prolateral process of P1 crestlike, anterior margin serrated; P2 lamellar, tip narrow, situated anteriorly to mp ( Figs 26F , 28C–E ). ABDOMEN: dorsum soft portions pale orange. Book lung covers small, very narrow. Dorsal scutum orange-brown, covering full length of abdomen, no soft tissue visible from above. Epigastric scutum not protruding. Postepigastric scutum orange-brown, almost semicircular, covering nearly full length of abdominal length ( Figs 24B,G ). LEGS: pale orange. GENITALIA: Epigastric region with sperm pore situated at level of posterior spiracles. Palp proximal segments pale orange; embolus tip flattened, not bent upwards; conductor present, without projections, longer than embolus, tip flattened ( Figs 26G–I , 28F–I ).

Female (PBI_OON 44880). As in male except as noted. Total length 1.57. CEPHALOTHORAX: Carapace pars cephalica strongly elevated in lateral view ( Fig. 27B ). Mouthparts: Chelicerae, endites and labium orange-brown ( Fig. 27E ). Labium rectangular, anterior margin not indented at middle ( Fig. 27D ). GENITALIA: Ventral view: postepigastric plate long (reaching the middle of postepigastric scutum), narrowed from half to tip, narrow, longitudinal slit slightly widened posteriorly; copulatory orifice slit-shaped, situated behind elevated anterior margin of posterior ventral scutum in depression; postepigastric scape absent. Dorsal view: anterior genitalic process with straight arms; genital duct smooth ( Figs 27F–H , 28J–L ).

Other material examined. Brazil. Pará. Portel: Comunidade Pacoval (01°50’54.45”S, 50°36’33.91”W), Jun. 02–07, 2016, N.M. Feitosa et al., leg., 1♀ (MPEG 37100, PBI _ OON 44907 ); (01°50’39.20”S, 50°36’31.60”W) , Jun. 03–06, 2016, 1♀ (MPEG 37101, PBI _ OON 44908 ); (01°50’40.16”S, 50°37’21.14”W) , Jun. 02–04, 2016, 1♀ (MPEG 37103, PBI _ OON 44879 ) . Comunidade Santa Rosa (01°51’07.30”S, 50°40’14.40”W), May 26–28, 2016, R. Saturnino et al., leg., 1♀ (MPEG 37102, PBI _ OON 44909 ) .

Distribution. Known only from Portel, state of Pará, Brazil ( Map 2 ).

Figures

MAP 2. Distribution of Hexapopha species.

FIGURES 24A–I. Hexapopha delta sp. nov., male (MPEG 37092; PBI_OON 52668). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F mouthparts ventral view. G abdomen, ventral view. H–I left palp. H prolateral view. I retrolateral view. Scale bars: 0.1mm.

FIGURES 26A–I. Hexapopha tallitae sp. nov., male (MPEG 37097; PBI_OON 46100). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F mouthparts, ventral view. G abdomen ventral view. H–I left palp. H prolateral view. I retrolateral view. Scale bars: 0.1mm.

FIGURES 27A–H. Hexapopha tallitae sp. nov., female (MPEG 37103; PBI_OON 44879). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 28A–L. Hexapopha tallitae sp. nov., SEM images. A–I male (MPEG 37103; PBI_OON 46100). J–L female (MPEG 37097; PBI_OON 44879). A–B carapace. A lateral view. B ventral view. C mouthparts, ventral view. D–E endites, lateral view (asterisk: prolateral process of P1). F–G left palp. F prolateral view. G retrolateral view. H–I embolus. H prolateral view. I retrolateral view. J epigastric region, ventral view. K internal genitalia, dorsal view. L detail of K, showing genital duct. Abbreviations: d, duct; mp, median projection; P, projection.

FIGURES 30A–H. Hexapopha platnicki sp. nov., female (MPEG 10287; PBI_OON 45330). A–B habitus. A dorsal view. B lateral view. C–E carapace. C dorsal view. D ventral view. E anterior view. F abdomen, ventral view. G–H epigastric region. G ventral view. H dorsal view. Scale bars: 0.1mm.

FIGURES 31A–L. Hexapopha platnicki sp. nov., SEM images. A–H male (MPEG 37731; PBI_OON 45513). I–L female (MPEG 37731; PBI_OON 45513). A carapace, ventral view. B endites, ventral view (asterisk: prolateral process of P1). C detail of B, showing projection P2. D abdomen, lateral view. E–F left palp. E prolateral view. F retrolateral view. G–H embolus. G prolateral view. H retrolateral view. I carapace, ventrolateral view. J epigastric region, ventral view. K internal genitalia, dorsal view. L detail of K, showing T-shaped anterior genitalic process.Abbreviations: as, anterior sclerite; d, duct; mp, median projection; P, projection.

FIGURES 66A–L. Hexapopha excavata sp. nov., SEM images. A–I male (MPEG 10917; PBI_OON 45369). J–L female (MPEG 37774; PBI_OON 45685). A–B carapace. A lateral view. B ventral view. C mouthparts, ventral view. D endites, lateral view. E detail of D, showing projection P2. F chelicerae, posterior view. G left palp, prolateral view. H–I embolus. H prolateral view. I retrolateral view. J epigastric region, ventral view. K internal genitalia, dorsal view. L detail of K, showing T-shaped anterior genitalic process. Abbreviations: as, anterior sclerite; d, duct; mp, median projection; P, projection.